Calefactio HGT-90 Expansion Tank (13.0 Gal Volume)

Calefactio HGT-90 Expansion Tank (13.0 Gal Volume)

The HGT-90 from Calefactio is an Expansion Tank (13 gal). It's a #90 bladder-type expansion tank designed for use in closed-loop hydronic and radiant heating systems. It is a direct replacement for Amtrol Extrol #90, B&G HFT-90 and Watts ETX-90 models.


  • Full acceptance bladder;
  • Compatible with conventional heating & radiant systems, glycol containing systems (up to 50/50 mix) and select solar applications;
  • No contact with steel shell means no corrosion;
  • Bladder design prevents waterlogging;
  • Direct replacement for #90 in-line models from other manufacturers;
  • For non-potable water applications only.

Technical Specifications:

  • Factory pre-charge pressure: 12 psi;
  • System connection: 1/2" male threaded;
  • Max. operating temperature: 240°F;
  • Max. operating pressure: 115 psi;
  • Expansion tank volume: 13.0 gallons;
  • Height: 23";
  • Diameter: 14.9";
  • Weight: 23 lbs.


  • 5-year manufacturer's warranty.
Product Specs
Diameter: 14.9"
Expansion tank volume: 13.0 gallons
Factory pre-charge pressure: 12 psi
Height: 23"
Max. Operating Pressure: 115 psi
Max. operating temperature: 240°F
System connection: 1/2" male threaded
Weight: 23 lbs.

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  • Calefactio HGT-90 Expansion Tank (13.0 Gal Volume) QR Code
  • Model: HGT-90
  • MPN: HGT-90
  • Availability: 13
  • $ 128.95


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Tags: Calefactio, Expansion Tanks, Heating Supplies, Radiant Heating System, Heating and Cooling